Linux磁盘分区（二）：删除

***********************************************声明************************************************ 原创作品，出自 “深蓝的blog” 博客，欢迎转载，转载时请务必注明出处（http://blog.csdn.net/huangyanlong）。表述有错误之处，请您留言或邮件（[email protected]）指明，不胜感激。*****************************************************************************************************续接上篇：“举例：将sdb1格式化为ext3文件系统”点击打开链接*****************************************************************************************************Linux硬盘分区（二）：删除******************************************************************************************************************************举例：对sdb1进行umount*************************[root@hyl /]# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda1 9.7G 5.4G 3.9G 59% //dev/sda3 35G 17G 17G 50% /hometmpfs 1006M 0 1006M 0% /dev/shm/dev/sdb1 1.9G 35M 1.8G 2% /data1[root@hyl /]# umount /data1[root@hyl /]# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda1 9.7G 5.4G 3.9G 59% //dev/sda3 35G 17G 17G 50% /hometmpfs 1006M 0 1006M 0% /dev/shm[root@hyl /]# fdisk -lDisk /dev/sda: 53.6 GB, 53687091200 bytes255 heads, 63 sectors/track, 6527 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 1305 10482381 83 Linux/dev/sda2 1306 1827 4192965 82 Linux swap / Solaris/dev/sda3 1828 6527 37752750 83 LinuxDisk /dev/sdb: 10.7 GB, 10737418240 bytes255 heads, 63 sectors/track, 1305 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sdb1 1 250 2008093+ 83 Linux/dev/sdb2 251 500 2008125 83 Linux/dev/sdb3 501 750 2008125 83 Linux/dev/sdb4 751 1305 4458037+ 5 Extended/dev/sdb5 751 875 1004031 83 Linux/dev/sdb6 876 1000 1004031 83 Linux/dev/sdb7 1001 1305 2449881 83 Linux*************************对第二块磁盘操作（即/dev/sdb）*************************[root@hyl /]# fdisk /dev/sdbThe number of cylinders for this disk is set to 1305.There is nothing wrong with that, but this is larger than 1024,and could in certain setups cause problems with:1) software that runs at boot time (e.g., old versions of LILO)2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK)Command (m for help): mCommand action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition l list known partition types m print this menu n add a new partition o create a new empty DOS partition table p print the partition table q quit without saving changes s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit x extra functionality (experts only)Command (m for help): pDisk /dev/sdb: 10.7 GB, 10737418240 bytes255 heads, 63 sectors/track, 1305 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sdb1 1 250 2008093+ 83 Linux/dev/sdb2 251 500 2008125 83 Linux/dev/sdb3 501 750 2008125 83 Linux/dev/sdb4 751 1305 4458037+ 5 Extended/dev/sdb5 751 875 1004031 83 Linux/dev/sdb6 876 1000 1004031 83 Linux/dev/sdb7 1001 1305 2449881 83 Linux*************************删除分区：sdb1及其它*************************Command (m for help): d--输入删除指令Partition number (1-7): 1--输入删除的分区号Command (m for help): p--打印分区表Disk /dev/sdb: 10.7 GB, 10737418240 bytes255 heads, 63 sectors/track, 1305 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sdb2 251 500 2008125 83 Linux/dev/sdb3 501 750 2008125 83 Linux/dev/sdb4 751 1305 4458037+ 5 Extended/dev/sdb5 751 875 1004031 83 Linux/dev/sdb6 876 1000 1004031 83 Linux/dev/sdb7 1001 1305 2449881 83 Linux--可以看到sdb1已经被删除了--接下来同理，删除其它分区Command (m for help): dPartition number (1-7): 2Command (m for help): dPartition number (1-7): 3Command (m for help): dPartition number (1-7): 4Command (m for help): p Disk /dev/sdb: 10.7 GB, 10737418240 bytes255 heads, 63 sectors/track, 1305 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id SystemCommand (m for help): w--保存退出The partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.--现在可以移除磁盘了***********************************************声明************************************************ 原创作品，出自 “深蓝的blog” 博客，欢迎转载，转载时请务必注明出处（http://blog.csdn.net/huangyanlong）。表述有错误之处，请您留言或邮件（[email protected]）指明，不胜感激。*****************************************************************************************************

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